New Crankset and BB for CAAD12

Discuss light weight issues concerning road bikes & parts.
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helterskelter
Posts: 6
Joined: Mon Oct 22, 2018 11:17 am

by helterskelter

I got a CAAD12 105 a couple of weeks ago on a decent deal with the aim of using it through the winter in it's current guise and trickling in the odd upgrade (Hunt wheels, CF seatpost & saddle) leading up to next spring when I plan on overhauling the 105 with a much lighter groupset to finish it off.

Predictably the BB30a bottom bracket is already making loud protests. I was always going to upgrade this and the crankset to a more robust option anyway but hadn't planned on having to do it so soon.

What have people had success with in terms of adaptors & crankset combo? I've found the Token Ninja or C-Bear as the current viable options with an Ultegra Crankset. In an ideal world i'd be able to run a Sram Red crankset but that doesn't seem an obvious option with those adaptors?

Trying to keep the combo within £250, would find the extra budget for Sram Red...

by Weenie


Ltyarbro42
Posts: 105
Joined: Wed Aug 10, 2016 6:05 pm

by Ltyarbro42

BBInfinite and be done.

FLtrooper
Posts: 137
Joined: Thu Oct 06, 2016 2:26 am
Location: SFL

by FLtrooper

Ltyarbro42 wrote:
Mon Oct 22, 2018 6:28 pm
BBInfinite and be done.
This....and pick up a Sram Red22 GXP crankset.

Best modification I made to my CAAD12.

:)
:beerchug:

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TarugoKing
Posts: 60
Joined: Thu Jul 21, 2016 3:47 pm

by TarugoKing


helterskelter
Posts: 6
Joined: Mon Oct 22, 2018 11:17 am

by helterskelter

FLtrooper wrote:
Mon Oct 22, 2018 8:10 pm
Ltyarbro42 wrote:
Mon Oct 22, 2018 6:28 pm
BBInfinite and be done.
This....and pick up a Sram Red22 GXP crankset.

Best modification I made to my CAAD12.

:)
Much appreciated! So next question... is the GXP crankset the best match for BB30A?

FLtrooper
Posts: 137
Joined: Thu Oct 06, 2016 2:26 am
Location: SFL

by FLtrooper

helterskelter wrote:
Mon Oct 22, 2018 10:52 pm
FLtrooper wrote:
Mon Oct 22, 2018 8:10 pm
Ltyarbro42 wrote:
Mon Oct 22, 2018 6:28 pm
BBInfinite and be done.
This....and pick up a Sram Red22 GXP crankset.

Best modification I made to my CAAD12.

:)
Much appreciated! So next question... is the GXP crankset the best match for BB30A?
If you want to use a SRAM crankset. I enjoy that the BB infinite bb30a to gxp bottom bracket doesn’t require the need of a wavy washer or additional spacers. Also.. no need for the ceramic offering.

:)
:beerchug:

helterskelter
Posts: 6
Joined: Mon Oct 22, 2018 11:17 am

by helterskelter

FLtrooper wrote:
Mon Oct 22, 2018 11:22 pm
helterskelter wrote:
Mon Oct 22, 2018 10:52 pm
FLtrooper wrote:
Mon Oct 22, 2018 8:10 pm
Ltyarbro42 wrote:
Mon Oct 22, 2018 6:28 pm
BBInfinite and be done.
This....and pick up a Sram Red22 GXP crankset.

Best modification I made to my CAAD12.

:)
Much appreciated! So next question... is the GXP crankset the best match for BB30A?
If you want to use a SRAM crankset. I enjoy that the BB infinite bb30a to gxp bottom bracket doesn’t require the need of a wavy washer or additional spacers. Also.. no need for the ceramic offering.

:)
Perfect. Looking to keep it as simple a solution as possible.

Ltyarbro42
Posts: 105
Joined: Wed Aug 10, 2016 6:05 pm

by Ltyarbro42

Yeah the ABEC-7 is plenty. Also, I'd recommend getting the 30mm spindle version and using spacers. You leave your options open this way.

helterskelter
Posts: 6
Joined: Mon Oct 22, 2018 11:17 am

by helterskelter

I went for the Hambini Shimano set up in the end. I’ll have the parts by the weekend which was a main factor as I want to be out riding. They also look like beautiful works of art.

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mythical
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Joined: Fri Apr 04, 2008 2:49 am
Location: Europe
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by mythical

Pardon me for asking, but I'm trying to wrap my head around something. Why would you deliberately choose a Shimano or Sram crankset with a smaller diameter axle, thereby needlessly choosing the less stiffness option and even increasing weight? I find the frame to be insanely good, and I believe the BB30A, while creating crankset compatibility issues, isn't a bad BB at all. Why revert to a worse solution? Personally, I would only consider Shimano or GXP when there's absolutely no other possible option, like in a Trek with BB90.

I bought a BB30/PF30-version Sram S500 crankset for under €70 (for the classic look) as a placeholder in my CAAD12 while I wait until my updated 3D printed titanium crankset prototypes are done. It spins on €338 CeramicSpeed coated bearings. Officially, this shouldn't work but I got it working with only some minor modifications to the preload adjuster.
Attachments
Sram S500 in CAAD12 BB30A.jpg
“I always find it amazing that a material can actually sell a product when it’s really the engineering that creates and dictates how well that material will behave or perform.” — Chuck Teixeira

TheKaiser
Posts: 644
Joined: Thu Sep 05, 2013 3:29 pm

by TheKaiser

mythical wrote:
Sun Dec 02, 2018 9:57 pm
I bought a BB30/PF30-version Sram S500 crankset for under €70 (for the classic look) as a placeholder in my CAAD12 while I wait until my updated 3D printed titanium crankset prototypes are done. It spins on €338 CeramicSpeed coated bearings. Officially, this shouldn't work but I got it working with only some minor modifications to the preload adjuster.
That is a very atypical crank/bearing cost ratio, but I get the rationale. More importantly, you can't just go dropping a teaser like "3D printed titanium crankset prototype" without more elaboration/info! What is the scoop? Do you have a separate thread on here about the project? I know there are limitations about overt promotion of commercial products (assuming you ultimately plan to commercialize this thing), but I think a 3DP Ti crank is unique and innovative enough that no one will complain.

by Weenie


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mythical
Posts: 1512
Joined: Fri Apr 04, 2008 2:49 am
Location: Europe
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by mythical

Said crankset is hiding in plain sight, just follow either link in my signature.
“I always find it amazing that a material can actually sell a product when it’s really the engineering that creates and dictates how well that material will behave or perform.” — Chuck Teixeira

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